Differences between genders in colorectal morphology on CT colonography using a quantitative approach: a pilot study.

Purpose: To explore quantitative differences between genders in morphologic colonic metrics and determine metric reproducibility.

Methods: Quantitative colonic metrics from 20 male and 20 female CTC datasets were evaluated twice by two readers; all exams were performed after incomplete optical colonoscopy. Intra-/inter-reader reliability was measured with intraclass correlation coefficient (ICC) and concordance correlation coefficient (CCC).

Renal imaging in patients with renal impairment.

In patients with renal impairment, the incremental benefits from administration of contrast media for imaging studies need to be carefully assessed relative to the potential increased risks of worsening renal dysfunction and systemic adverse effects. This review provides an overview of risk and benefits of iodinated and gadolinium-based contrast agents; examines their relationships to contrast-induced nephropathy (CIN) and nephrogenic systemic fibrosis (NSF), respectively; and discusses various clinical strategies to minimize the risk of CIN and NSF. Specifically, renal imaging strategies aimed to minimize the adverse effects of contrast media as well as alternatives to iodinated and gadolinium-based contrast-enhanced renal imaging are proposed with emphasis on non-contrast-enhanced magnetic resonance imaging.

Frequency and histopathologic basis of hepatic surface nodularity in patients with fulminant hepatic failure.

Purpose: To determine the frequency and histopathologic basis of hepatic surface nodularity at imaging in patients with fulminant hepatic failure.

Materials And Methods: The committee on human research approved this HIPAA-compliant study and waived written informed consent. Thirty-five consecutive patients [24 female [mean age, 38 years +/- 19 (standard deviation); range, 1-67 years] and 11 male [mean age, 29 years +/- 22; range, 2-61 years]] with a mean age of 35 years +/- 20 (range, 1-67 years) who underwent liver transplantation for fulminant hepatic failure at our institution during a 5-year period were retrospectively identified.

Pulsed high-intensity focused ultrasound enhances apoptosis and growth inhibition of squamous cell carcinoma xenografts with proteasome inhibitor bortezomib.

Purpose: To investigate whether combining pulsed high-intensity focused ultrasound (HIFU) with the chemotherapeutic drug bortezomib could improve antitumor activity against murine squamous cell carcinoma (SCC) tumors.

Materials And Methods: All experiments were conducted with animal care and use committee approval. Murine SCC cells were implanted subcutaneously in C3H mice.

Pulsed-high intensity focused ultrasound and low temperature-sensitive liposomes for enhanced targeted drug delivery and antitumor effect.

Purpose: To determine if pulsed-high intensity focused ultrasound (HIFU) could effectively serve as a source of hyperthermia with thermosensitive liposomes to enhance delivery and efficacy of doxorubicin in tumors.

Experimental Design: Comparisons in vitro and in vivo were carried out between non-thermosensitive liposomes (NTSL) and low temperature-sensitive liposomes (LTSL). Liposomes were incubated in vitro over a range of temperatures and durations, and the amount of doxorubicin released was measured.

A novel polymeric chlorhexidine delivery device for the treatment of periodontal disease.

An implantable, anti-microbial delivery device for the treatment of periodontal disease has been developed. In this polymer-based delivery system, the encapsulation efficiency, release characteristics, and bioactivity of anti-microbial agent were controlled by the complexation of the drug with cyclodextrins of differing lipophilicity. Microparticles of poly(dl-lactic-co-glycolic acid) (PLGA) containing chlorhexidine (Chx) free base, chlorhexidine digluconate (Chx-Dg) and their association or inclusion complex with methylated-beta-cyclodextrin (MBCD) and hydroxypropyl-beta-cyclodextrin (HPBCD) were prepared by single emulsion, solvent evaporation technique.